Question

------------- represents the lens formula
(a)1/v+1/u=1/f
(b)1/v-1/u=1/f
(c)1/v+1/u=2/f
(d)1/u-1/f=1/f​​

Answer 1

Answer:

A is correct answer

Explanation:

When a lens of known focal length, f is used to find the relationship between the object distance, u and the image distance v, the value of (1/u + 1/v) is a constant. This constant value is equal to 1/f.

Answer 2

(B) 1/v-1/u=1/f is correct answer